help please

I'm not sure I'm attracted to my boyfriend anymore. Honestly I don't think I'm even happy or want this anymore. I try and avoid having sex with him. But I love being held by him and seeing him. I know sex is a huge part. And idk what the hell my problem is. But I was trying to suck it up and have sex with him tonight cause it's been a while.. and I couldn't only suck it up for so long I started to cry in the middle of it. What do I do?! I feel like I don't have a good enough reason to break up with him. But I really am not feeling this anymore.  I have so many things running through my head. But sex isn't even enjoyable anymore. I don't get turned on in the slightest. What am I suppose to do😭😭